HS code · 6-digit subheading
HS Code 2905.51 – Alcohols; acyclic; halogenated, sulphonated, nitrated or nitrosated derivatives thereof, ethchlorvynol (INN)
HS code 2905.51 is the 6-digit subheading for alcohols, acyclic, halogenated, sulphonated, nitrated or nitrosated derivatives thereof, ethchlorvynol (INN). It is used for ethchlorvynol (pharmaceutical grade), ethchlorvynol raw material, ethchlorvynol for research, ethchlorvynol standard solution and ethchlorvynol API.
What HS 2905.51 covers
This specific HS code is dedicated to ethchlorvynol, an acyclic alcohol derivative that has been chemically modified through halogenation, sulfonation, nitration, or nitrosation. Ethchlorvynol itself is a sedative-hypnotic drug, though its use has significantly declined due to the availability of safer alternatives. Trade in this particular compound is highly regulated and primarily involves pharmaceutical manufacturers or specialized chemical suppliers for research or very niche medical applications. Importers and exporters must navigate strict drug control regulations, including permits and licenses, given its pharmacological properties. The market is small and specialized, focusing on high-purity pharmaceutical-grade material for specific, limited uses.
- Covers
- Ethchlorvynol (pharmaceutical grade)
- Ethchlorvynol raw material
- Ethchlorvynol for research
- Ethchlorvynol standard solution
- Ethchlorvynol API
- Examples
- Placidyl (historical brand name for ethchlorvynol)
- specific API suppliers for controlled substances
- research chemical distributors
Codes often confused with 2905.51
Common mistake. Could be confused with other acyclic alcohol derivatives under 290559 if the specific "ethchlorvynol" designation is overlooked, or with other sedative drugs in Chapter 30 due to its pharmacological use.
Top exporters and importers of HS code 290551, 2025
In 2025, the largest exporter of HS code 290551 in UN Comtrade data was the United States, with 92% of world exports; the largest importer in UN Comtrade data was Syria, with about 82% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 United States $188K 92% of world exports
- 2 Saudi Arabia $12K 6.0% of world exports
- 3 United Kingdom $2K 1.0% of world exports
World total: $204K Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Syria* ~$12K 82% of world imports · partner records ↗
- 2 Egypt $1K 6.8% of world imports
- 3 Montenegro $703 4.7% of world imports
World total: $15K Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 2905.51
Brazil does not split HS 2905.51: its NCM code is 2905.51.00.
All Brazil NCM codes in heading 29.05 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
EU Regulatory Requirements
This product category is subject to the EU Deforestation Regulation (EUDR). Importers must provide due diligence statements proving the product was not produced on deforested land after December 31, 2020.
Questions about HS 2905.51
What is HS code 290551?
HS code 290551 is a 6-digit subheading in the Harmonized System that covers: Alcohols; acyclic; halogenated, sulphonated, nitrated or nitrosated derivatives thereof, ethchlorvynol (INN). This specific HS code is dedicated to ethchlorvynol, an acyclic alcohol derivative that has been chemically modified through halogenation, sulfonation, nitration, or nitrosation. Ethchlorvynol itself is a sedative-hypnotic drug, though its use has significantly declined due to the availability of safer alternatives. Trade in this particular compound is highly regulated and primarily involves pharmaceutical manufacturers or specialized chemical suppliers for research or very niche medical applications. Importers and exporters must navigate strict drug control regulations, including permits and licenses, given its pharmacological properties. The market is small and specialized, focusing on high-purity pharmaceutical-grade material for specific, limited uses.
What products fall under HS code 290551?
Ethchlorvynol (pharmaceutical grade), Ethchlorvynol raw material, Ethchlorvynol for research, Ethchlorvynol standard solution, Ethchlorvynol API
What are common misclassifications for HS code 290551?
Could be confused with other acyclic alcohol derivatives under 290559 if the specific "ethchlorvynol" designation is overlooked, or with other sedative drugs in Chapter 30 due to its pharmacological use.
Which countries are the top exporters of goods under HS code 290551?
In 2025, the top exporters of HS code 290551 in UN Comtrade data were the United States ($188K, 92% of world exports), Saudi Arabia ($12K) and the United Kingdom ($2K). World exports came to about $204K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 290551?
In 2025, the top importers of HS code 290551 in UN Comtrade data were Syria (about $12K, 82% of world imports), Egypt ($1K) and Montenegro ($703). World imports came to about $15K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 290551 structured?
HS code 290551 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (05) identify the heading, and digits 5-6 (51) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 290551?
In Brazil, HS code 290551 is NCM 2905.51.00. The last two digits are 00 because Brazil does not split this HS code further.